On Fri, Jun 1, 2018 at 11:53 AM, Tom Lane <t...@sss.pgh.pa.us> wrote:
> > I agree though that it seems strange to special-case SQLValueFunction > rather than any-stable-expression. As long as the evaluation happens > at executor start (i.e. with the query's run-time snapshot) it should > be reasonable to simplify any stable expression. > > It's worth questioning whether this is a bug fix or an improvement. > If the latter, it probably ought to wait for v12. > If explaining the change requires reference to tokens from the source code, rather than something an end user could understand, I'd argue it is a bug fix rather than an improvement. Cheers, Jeff